Improves fulminating composition



"icirrrrsn GEORG BOLDT, OF CHICAGO, ILLINOIS.

Specification forming part of LettersPatcnt Nc. 56,167, dated July 10,

a whom it may concern:

it known that I, GEORG BOLDT,0f Hannow resident of Chicago, in the county JOk and State of" Illinois, have invented mniineting Substance to Ignite Cartridges; in? do hereby declare that the following is and exact description thereof, reference g had to the accompanying specimens.

The object of my invention is to produce a fniminating substance with which to fill the cavitiesin the back part of conical or other projectiles to be used in firearms of particular cc:zntrnctiow-snch,,ibr instance, as the Prussian Ziml-nmlel rifle, where a needle worked hp proper inerhzini'sm pierces the cartridge it behind and, passing through its powder, st. hes the l'ulminating substance filling the ens/icy in the hind part of the bullet, ignites it. by concussion or friction, and thus ignites the cartridge itself. i

To enable others skilled in the art to make rand use my invention, 1 will describe itspreperotics. I

i :nnjlre. first n preparation of fulminatingin the iellon'ing way: I lake one (1) part, ight, of mercury and solve it in ten (10) nitric acid; leave it to stand twentyfwhunrs, and. shaking it often; then I put solution intoaporeelain vessel and warm strongly on a spiritlamp. 1 add to this and holi well the whole together; then I cool totes the sulphur-tin.

armed solution twelve (12) parts of alcohol, I

the fuhninatiug-silver. I take two(2) parts,

in weight, of flowers of sulphur and three (3) partsof tin, melt them together, and when cooled grind them into powder. This consti- After that, in order to make my fulmiuating substance, I take, in weightyfifbeen (15) parts of fulminating-sH ver, one and a halt (1%) parts of sulphur-tin, three (3) parts of fine powder-flour, and one (1) part of finely-powdered charcoal. gredients into a porcelain mortar and mix them finely with a. wooden peste; then I add enough of gum-water (one (1) part of gumarabic diluted in one hundred (100) parts of water) to make a somewhat dampish paste of the mixture, so as to have it easily pressed into the cavity of bullets, and the fulminating substance is ready.

What I claim as my invention, and desire to secure by Letters Patent, is-

A fulminating substance to ignite cartridges by filling with it small cavities in the back part of conical projectiles and using an igniting-needle, said fulminatln g substance consisting of the ingredients above enumerated, and prepared and mixed as above described and specified.

.GEORG BOLDT.

Witnesses;

CHARLIE FOWLER, SAML. J. FRAZIER.

Put all'these iii-- 

